WA04T220-PTL [WALSIN]
Excellence performance in surface mounting assembly;
| 型号： | WA04T220-PTL |
| 厂家： | 
Walsin Technology |
| 描述： | Excellence performance in surface mounting assembly |
| 文件： | 总7页 (文件大小：223K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Approval sheet
WA04T
±5%, ±1% Concave Type
General purpose chip resistors array
Size 0402x4
*Contents in this sheet are subject to change without prior notice.
Page 1 of 7
ASC_WA04T_Concave_V10
Oct.2010
Approval sheet
FEATURE
1. Small size and light weight
2. Reduced size of final equipment
3. Lower surface mounted assembly costs
4. Higher component and equipment reliability
5. Strong body and terminations
6. Excellence performance in surface mounting assembly.
APPLICATION
•
•
•
Consumer electrical equipment
EDP, Computer application
Telecom
DESCRIPTION
The resistors array is constructed in a high grade ceramic body (aluminum oxide). Internal metal electrodes are
added at each end and connected by a resistive paste that is applied to the top surface of the substrate. The
composition of the paste is adjusted to give the approximate resistance required and the value is trimmed to
within tolerance by laser cutting of this resistive layer.
The resistive layer is covered with a protective coat. Finally, the external end terminations are added. For ease
of soldering the outer layer of these end terminations is a Tin (lead free) solder alloy.
Fig 1. Consctruction of a Chip-R array WA04T
Page 2 of 7
ASC_WA04T_Concave_V10
Oct.2010
Approval sheet
QUICK REFERENCE DATA
Item
Series No.
General Specification
WA04T(Concave type)
0402x4 (1005x4)
±5%, ±1% ( E24 series )
3Ω ~ 1MΩ, Jumper (0Ω)
≤ ± 300 ppm/°C
1/16 W
Size
Resistance Tolerance
Resistance Range
TCR (ppm/°C)
Max. dissipation at Tamb=70°C
Max. Operation Voltage
Max. Overload voltage
Rated Current JUMPER (0Ω)
Peak Current JUMPER (0Ω)
Climatic category
25V
50V
1A
1.5A
55/155/56
Note :
1.
This is the maximum voltage that may be continuously supplied to the resistor element, see “IEC publication
60115-8”
2.
Max. Operation Voltage : So called RCWV (Rated Continuous Working Voltage) is determined by
RCWV = RatedPower×ResistanceValue or Max. RCWV listed above, whichever is lower.
DIMENSIONS(unit :mm)
WA04T
L
W
T
2.00 ± 0.10
1.00 ± 0.10
0.45 ± 0.10
0.50 ± 0.05
0.35 ± 0.05
0.25 ± 0.15
0.35 ± 0.05
0.25 ± 0.15
P
A
B
C
G
CONSTRUCTION
R1=R2=R3=R4
Page 3 of 7
ASC_WA04T_Concave_V10
Oct.2010
Approval sheet
MARKING
For ±5%, ±1% tolerance : 3-digits marking
Each resistor is marked with a three digits code on the protective coating to designate the nominal resistance
value. For values up to 9.1 the R is used as a decimal point. For values of 10.0 or greater the first 2 digits
apply to the resistance value and third indicate the number of zeros to follow.
Example
RESISTANCE
10Ω
12Ω
100Ω
6800Ω
47000Ω
100
120
101
682
473
3-digits marking
FUNCTIONAL DESCRIPTION
Product characterization
Standard values of nominal resistance are taken from the E24 series for resistors with a tolerance of ±5%,
±1%. The values of the E24 series are in accordance with “IEC publication 60063”
Derating
The power that the resistor can dissipate depends on the operating temperature; see Fig.2
Figure 2. Maximum dissipation in percentage of rated power
As a function of the ambient temperature
CATALOGUE NUMBERS
The resistors have a catalogue number starting with .
WA04
Size code
T
220_
Resistance code
J
T
L
Type code
Tolerance
Packaging code Termination code
WA04 : 0402 per T : x4, concave
element
T : 7” Reel
taping
L
= Sn base (lead
free)
±5% E24: 2 significant digits followed J : ±5%
by no. of zeros and a blank
F : ±1%
B : Bulk
10Ω
=100_
=221_
=000_
P : Jumper
220Ω
Jumper
(“_” means a blank)
±1%, E24+E96: 3 significant digits
followed by no. of zeros
100Ω
=1000
=3742
37.4KΩ
1.
Reeled tape packaging : 8mm width paper taping 10,000pcs per reel.
Page 4 of 7
ASC_WA04T_Concave_V10
Oct.2010
Approval sheet
MOUNTING
Due to their rectangular shapes and small tolerances, Surface Mountable Resistors are suitable for handling by
automatic placement systems.
Chip placement can be on ceramic substrates and printed-circuit boards (PCBs).
Electrical connection to the circuit is by individual soldering condition.
The end terminations guarantee a reliable contact.
SOLDERING CONDITION
The robust construction of chip resistors allows
them to be completely immersed in a solder bath
of 260°C for 10 seconds. Therefore, it is possible
to mount Surface Mount Resistors on one side of
a PCB and other discrete components on the
reverse (mixed PCBs).
Surface Mount Resistors are tested for
solderability at 235°C during 2 seconds. The test
condition for no leaching is 260°C for 30 seconds.
Typical examples of soldering processes that
provide reliable joints without any damage are
given in Fig 3.
Fig 3. Infrared soldering profile for Chip Resistors array
TEST CONDITION FOR JUMPER (0Ω)
Item
WA04T
1/16W
Power Rating At 70°C
Resistance
MAX.50mΩ
1A
Rated Current
Peak Current
1.5A
-55~155°C
Operating Temperature
Page 5 of 7
ASC_WA04T_Concave_V10
Oct.2010
Approval sheet
TEST AND REQUIREMENTS
REQUIREMENT
Resistor
TEST
PROCEDURE
Jumper
< 50mΩ
DC resistance
DC resistance values measured at the test voltages Within the specified tolerance
specified below :
Clause 4.5
<10Ω@0.1V,<100Ω@0.3V, <1KΩ@1.0V,<10KΩ@3V,
<100KΩ@10V, <1MΩ@25V, <10MΩ@30V.
Temperature Coefficient Natural resistance change per change in degree centigrade. Refer to
N/a
of Resistance(T.C.R)
“QUICK REFERENCE DATA”
R2 − R
×106 (ppm/°C) t1 : 20°C+5°C-1°C
1
Clause 4.8
R
(
t2 − t1
)
1
R1 : Resistance at reference temperature
R2 : Resistance at test temperature
Short time overload
(S.T.O.L)
Clause 4.13
Permanent resistance change after a 5second application of
a voltage 2.5 times RCWV or the maximum overload voltage
specified in the above list, whichever is less.
∆R/R max. ±(2%+0.10Ω)
< 50mΩ
Resistance to soldering
heat(R.S.H)
Clause 4.18
Un-mounted chips completely immersed for 10±1 second in a
SAC solder bath at 260℃±5℃
no visible damage
no visible
damage,
<50mΩ
∆ R/R max. ±(1.0%+0.05Ω)
Un-mounted chips completely immersed for 2±0.5 second in a
SAC solder bath at 235℃±5℃
Solderability
Clause 4.17
good tinning (>95% covered)
no visible damage
Temperature cycling
no visible damage
no visible
damage,
30 minutes at -55°C±3°C, 2~3 minutes at 20°C+5°C-1°C, 30
minutes at +155°C±3°C, 2~3 minutes at 20°C+5°C-1°C, total
5 continuous cycles
Clause 4.19
∆R/R max. ±(1%+0.05Ω)
< 50mΩ
Load life (endurance)
1000 +48/-0 hours, loaded with RCWV or Vmax in chamber
controller 70±2ºC, 1.5 hours on and 0.5 hours off
10Ω~1MΩ
±(3%+0.1Ω) < 50mΩ
Clause 4.25
<10Ω or ≥1MΩ ±(5%+0.1Ω)
Load life in Humidity
1000 +48/-0 hours, loaded with RCWV or Vmax in humidity
chamber controller at 40°C±2°C and 90~95% relative
humidity, 1.5hours on and 0.5 hours off
10Ω~1MΩ
±(3%+0.1Ω) < 50mΩ
Clause 4.24
<10Ω or ≥1MΩ ±(5%+0.1Ω)
Adhesion
Pressurizing force: 5N, Test time: 10±1sec.
No remarkable damage or removal of the
terminations
Clause 4.32
Insulation Resistance
Apply the maximum overload voltage (DC) for 1minute
R≧10GΩ
Clause 4.6
Dielectric Withstand
Apply the maximum overload voltage (AC) for 1 minute
No breakdown or flashover
Voltage
Clause 4.7
Page 6 of 7
ASC_WA04T_Concave_V10
Oct.2010
Approval sheet
PACKAGING
Paper Tape specifications (unit :mm)
Series No.
WA04T
A
B
W
F
E
2.20±0.20
1.20±0.20
8.00±0.30
3.50±0.20
1.75±0.10
Series No.
WA04T
P1
P0
T
ΦD
+0.1
2.00±0.05
4.00±0.10
Max. 0.6
Φ1.50
−0.0
Reel dimensions
Symbol
(unit : mm)
A
B
C
D
13.0±0.2
9.0±0.5
Φ178.0±2.0
Φ60.0±1.0
Page 7 of 7
ASC_WA04T_Concave_V10
Oct.2010
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